I didn't format it as GPT, I just did a full format in NTFS. I did create a new USB boot drive, since my old one was made several years ago. Where exactly is the setting for 'AMI Native NVMe' support? Under the Advanced tab and under Onboard Device Configuration, I had the M.2_1 slot set to either Auto or PCIe (it also has a setting labeled 'Teton Glacier' but I don't know what that is a quick Google search indicated something related to Intel.) Is that really what I should do? The secondary slot on this board stands perpendicular to the motherboard, and in my current configuration wouldn't fit with the other components installed-and it wouldn't look as good You said to use the M.2_2 (secondary) slot instead of the M.2_1 (primary) slot. I hope that what I said above will help you! Also, put Secure Boot on Windows UEFI mode, Fast Boot disabled and AMI Native NVMe support, on. You will start the BIOS in UEFI mode and disable CSM boot.

Make a windows bootable usb stick under GPT mode with Media Creation Tool. First of all, install the NVMe SSD on the M2_2 socket (see motherboard manual).

Installing os on ssd new build